Study on the Mechanism of the Nanofluid Wetting Inversion Effect Enhancing the Flow in Microchannels.

ABSTRACT: Nanofluids can induce a reversal of wetting at the solid-liquid interface, which is expected to enhance flow within channels. In this paper, we evaluate the performance of nanofluids in inducing wetting transitions on solid surfaces and investigate the mechanisms that improve flow. First, the experimental tests on contact angles demonstrate that solid surfaces treated with surfactant-nanoparticle composite solutions exhibit high hydrophilicity. The effects of nanoparticles and surfactants on reducing the contact angle are separately investigated. The basic mechanism of solid-liquid interface oil film separation caused by the separation pressure is elaborated. To verify the promoting effect of wetting reversal on flow, we conducted flow testing experiments using a self-designed 3D microchan

SUBMITTER: Dou X 

PROVIDER: S-EPMC12355274 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature